An occupational accident is an accident that people suffer at work. It is an occurrence that the victim had not planned or expected. An occupational accident may also be an act of violence in connection with or arising out of work. An occupational injury is bodily damage resulting from working. The most common organs involved are the spine, hands, the head, lungs, eyes, skeleton, and skin. The occupational accident is severe if the employee dies or if he or she suffers a permanent or severe injury. Severe injuries are for example: long bone fractures or fractures which may need surgery, difficult spinal fractures, viscerocranial fractures, multiple rib fractures and hemothorax, severe skull compound fractures, severe fractures to neck, chest or lumbar spine, severe dislocation causing permanent injury, loss of limb for example a finger or part of it, shortening of limb, injury to the abdominal cavity organs requiring surgery, brain injury leaving also light injuries, loss or permanent weakening of speech, sight or hearing, loss of eyes, burn or similar injuries to skin requiring skin transplantation, extensive burns or frostbites, severely disfiguring deformities, for example loss of ear lobe or nose or part of it or other severe deformity, permanent severe health harm or a life-threatening disease or lesion.